Daewoo DVST1C1WX-BG/D Manuale utente

Service Manual

S/M No.:. : VTC1C1WET0

Jan. 2002

DAEWOO ELECTRONICS CO., LTD.

http : //svc.dwe.co.kr

Video Cassette Player

Model:

DVST1C1WX - BG / D

DVST1C1WX - BG / E

DVST1M1WX - BB / D

DVST1M1WX - BB / E

DV - T1M1WX - BB / D

DV - T1M1WX - BB / E

DV - T1B1WX - BB / D

ALL T4 - MECHA

1B1W

1C1W

1M1W

✔

Caution

: In this Manual, some parts can be changed for improving, their

performance without notice in the parts list. So, if you need the

latest parts information,please refer to PPL(Parts Price List) in

Service Information Center (http://svc.dwe.co.kr).

TABLE OF CONTENTS

SPECIFICATION..........................................................................................................2

CIRCUIT DIAGRAM & WAVE FORM ............................................................................ 3

INTERCONNECT WIRING DIAGRAM .................................................................................................... 3

POWER SUPPLY SCHEMATIC DIAGRAM(MIDDLE EAST) .................................................................. 4

POWER BLACK DIAGRAM ..................................................................................................................... 6

SERVO & SYSCON SCHEMATIC DIAGRAM(MIDDLE EAST) ............................................................... 7

SERVO & SYSCON BLOCK DIAGRAM .................................................................................................. 9

VIDEO/AUDIO SCHEMATIC DIAGRAM .................................................................................................. 10

PCB CIRCUIT BOARD ..................................................................................................15

COMPONENTS LOCATION ....................................................................................... 17

ELECTRICAL PARTS LIST ........................................................................................... 18

APPENDIX (Appendix is provided only by internet http://svc.dwe.co.kr)

TROUBLESHOOTING GUIDES

VIDEO PLAYBACK PATH FOR PAL ....................................................................................................... 12

PIF SCHEMATIC DIAGRAM .................................................................................................................... 13

SPECIFICATIONS

* Design and specification can be subjected to change without notice.

*INPUT/OUTPUT JACK TYPE

GENERAL

Power Requirement

Power Consumption

Temperature

Operating position

Dimensions (W x H x D)

Weight

Format

Tape Width

Tape Speed

Maximum Recording Time with full-size

cassette

AC 90~250V, 50Hz , 60Hz

Max. 14W (in REC mode)

C ~ 35

C (Operating)

-20

C ~ 60

C (Storage)

Horizontal only

360 x 91 x 239 (mm)

Approx. 3.8 Kg

VHS standard

12.65mm

PAL (SP): 23.39mm/sec (LP) : 11.70mm/sec

NTSC (EP):11.12mm/sec (SP): 33.35mm/sec

PAL (SP): 240min, with E-240 video cassette

(LP):480min, with E-240 video cassette.

NTSC(SP):120min, with T-120 video cassette.

(EP):360min, with T-120 video cassette.

VIDEO

Signal system

Recording system

Input

Output

Signal-to-Noise ratio

Horizontal resolution

PAL/MESECAM/NTSC color signal

Rotary two-head helical scan with a slant double-azimuth combination videohead

1.0Vp-p, 75ohms, unbalanced

More than 43dB (SP)

240 lines

AUDIO

Recording system

Input

Output

Frequency Range

Signal to Noise Ratio

Audio Distortion

Longitudinal track

-8dBm(more than 47 k-ohms)unbalanced

-5.8dBm, (more than 1 k-ohms load),unbalaned

100Hz-10KHz(NTSC SP), 100Hz-8KHz(PAL-SP)

More than 40dB (PAL-SP)

Normal : Less than 4% (SP), HIFI : Less than 0.7%

RF Output 21 ~ 40 CH(Adjustable)

ACCESSORIES

Provided Accessories Remote control unit, RF Cable, Battery

SCART JACK

RCA JACK(PHONE JACK)

DVST1C1WX-BG/E,DVST1M1WX-BB/E,DV-T1M1WX-BB/E

DVST1C1WX-BG/D,DVST1M1WX-BB/D,DV-T1M1WX-BB/D,DV-T1B1WX-BB/D

INTERCONNECT WIRING DIAGRAM

POWER SUPPLY SCHEMATIC CIRCUIT DIAGRAM(MIDDLE EAST)

LOC. PIN EE PLAY REC.

IC801 1 5.5 5.5 5.5

2 4.4 4.4 4.4

3 0.8 0.8 0.8

4 5.6 5.6 5.6

LOC. PIN EE PLAY REC.

IC802 1 2.5 2.5 2.5

2000

3 4.4 4.4 4.4

POWER MODE

LOC. PIN EE PLAY REC.

Q801 G 290 290 290

D 200 200 200

S 250 250 260

Q802 G 0 0 0

D 250 250 260

S000

Q803 E 0 0 0

B000

C111

Q804 E 0 0 0

B 0.4 0.4 0.4

C111

Q805 E 12.6 12.6 12.6

B 13.2 13.2 13.2

C 14.7 14.3 15

Q806 E 0 0 0

B 0.3 0.3 0.3

C 13.2 13.2 13.2

Q807 E 5.3 5.3 5.3

B666

C 5.8 5.8 5.8

! Q801 “D” X : 20V DIV

Y : 5uS DIV @ Q801 “G” X : 100V DIV

Y : 5uS DIV # T801 PIN 2 X : 5V DIV

Y : 5uS DIV

$T801 PIN 4 X : 100V DIV

Y : 5uS DIV % T801 PIN 6 X : 1V DIV

Y : 2mS DIV ^ IC801 PIN3 X : 0.1V DIV

Y : 5uS DIV

$ IC801 PIN 4 X : 2V DIV

Y : 5uS DIV

POWER BLOCK DIAGRAM

SERVO & SYSCON SCHEMATIC DIAGRAM(MIDDLE EAST)

SYSCON MODE

LOC. PIN EE PLAY REC.

IC601 1 5.1 5.1 5.1

2000

3 0.2 0.2 0.4

4 2.1 2.1 2.1

5000

6 5.1 5 5.1

7000

8 0.1 0.1 0.4

9 0.1 0.1 0.4

10 1.8 2.6 1.4

11 1.1 1.1 1.1

12 0.6 0.6 0.6

13000

14 5.2 5.2 5.2

15 5 2.5 2.5

16555

17 0 0.1 0.3

18 2.5 2.5 2.5

19 2.5 2.5 2.5

20 0.6 0.6 0.6

21 0.6 0.6 0.6

22 0.6 0.6 0.6

23 0.6 0.6 0.6

24 0.6 0.6 0.6

25 0.6 0.6 0.6

26 0.6 0.6 0.6

27 0.6 0.6 0.6

28555

29555

30 5 0.5 5

31 5 5 0.6

32 0.6 0.6 0.6

33000

34555

35 0.2 0.2 0.3

36 0.2 0.2 0.2

37555

38222

39 2.3 2.3 2.3

40000

41 2.3 2.3 2.3

42 2.3 2.3 2.3

43555

44 2.8 2.8 2.8

45 2.8 2.8 2.8

46000

47 1.8 1.8 1.8

48000

49000

50 1.9 1.9 1.9

51 2.8 2.8 2.8

52 1.9 1.9 1.9

53 5.2 5.2 5.2

54 2.1 2.1 2.1

55000

56110

57000

58 0.3 0.3 0.3

59550

60 4.9 4.9 4.9

61 4.9 0 0

SYSCON MODE

LOC. PIN EE PLAY REC.

IC601 62 0 4.9 4.9

63000

64 0 0 4.9

65 0 4.9 4.9

66 4.9 0 0

67000

68 1.5 1.5 1.5

69000

70000

71 4.2 4.5 4.5

72 4.3 4.5 4.5

73 2.2 2.2 0.2

74 0 4.9 0

75 0.3 0.3 0.3

76 0 2.5 2.5

77 0 2.7 2.7

78000

79 0 0°Í5 0°Í5

80 0 0°Í5 0°Í5

81000

82000

83000

84 4.9 0 0

85000

86 2.4 0.2 0.2

87 1.2 2.5 2.5

88000

89 4.5 2 2.1

90 0.2 0.3 0.3

91 2.5 2.5 2.5

92 2.5 2.5 2.5

93 2.4 0 0

94 2.5 2.5 2.2

95 2.5 2.5 2.7

96 2.5 2.5 2.5

97 2.5 2.5 2.5

98 5.1 5.1 5

99 5.1 5.1 5

100 0 0 0

SYSCON MODE

LOC. PIN EE PLAY REC.

IC603 1000

2000

3000

4000

5 4.3 4.5 4.5

6 4.3 4.5 4.5

7000

8555

SYSCON MODE

LOC. PIN EE PLAY REC.

IC604 1000

2 0.4 0.4 0.3

3 0.8 0.8 0.8

4 7.3 7.3 7.3

5000

6000

7 13.2 12.7 13.5

8 13.2 12.7 13.5

9 0.8 0.8 0.8

10 0.4 0.4 0.3

! IC601 PIN97 X : 1V DIV

CTL AMP OUT Y : 5uS DIV @ IC601 PIN89 X : 1V DIV

DRUM FG Y:0.5mS DIV # IC601 PIN87 X : 1V DIV

CAPSTAN FG Y:0.5mSDIV

$ IC601 PIN76 X : 1V DIV

CAPSTAN PWM Y : 5uS DIV % IC601 PIN71 X : 1V DIV

SERIAL CLK Y :0.1mS DIV ^ IC601 PIN72 X : 1V DIV

SERIAL DATA Y : 0.1mS DIV

SERVO & SYSCON BLOCK DIAGRAM

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